Add clang-format file

Also run it across the whole tree to get everything using the One True Style.
We don't yet run this in an automated fashion as it's a little slow, but
there is a snippet to do so in makeall.sh.

LibCore/CSocket.h

@@ -7,7 +7,12 @@ class CNotifier;
 
 class CSocket : public CIODevice {
 public:
-    enum class Type { Invalid, TCP, UDP };
+    enum class Type
+    {
+        Invalid,
+        TCP,
+        UDP
+    };
     virtual ~CSocket() override;
 
     bool connect(const String& hostname, int port);